2120121021200 has 360 divisors, whose sum is σ = 6312598164288. Its totient is φ = 670013061120.

The previous prime is 2120121021197. The next prime is 2120121021229. The reversal of 2120121021200 is 21201210212.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 372405554 + ... + 372411246.

Almost surely, 2^{2120121021200} is an apocalyptic number.

2120121021200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2120121021200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3156299082144).

2120121021200 is an abundant number, since it is smaller than the sum of its proper divisors (4192477143088).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2120121021200 is a wasteful number, since it uses less digits than its factorization.

2120121021200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6531 (or 6507 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 2120121021200 its reverse (21201210212), we get a palindrome (2141322231412).

2120121021200 divided by its reverse (21201210212) gives a square (100 = 10²).

The spelling of 2120121021200 in words is "two trillion, one hundred twenty billion, one hundred twenty-one million, twenty-one thousand, two hundred".